CN107115975A - Beneficiation method for recovering micro-fine particle iron oxide from copper dressing tailings - Google Patents

Beneficiation method for recovering micro-fine particle iron oxide from copper dressing tailings Download PDF

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Publication number
CN107115975A
CN107115975A CN201710369525.6A CN201710369525A CN107115975A CN 107115975 A CN107115975 A CN 107115975A CN 201710369525 A CN201710369525 A CN 201710369525A CN 107115975 A CN107115975 A CN 107115975A
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China
Prior art keywords
iron oxide
beneficiation method
ore
maltodextrin
reclaimed
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CN201710369525.6A
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CN107115975B (en
Inventor
孙运礼
郭艳华
杨俊龙
袁艳
包玺琳
廖雪珍
彭贵熊
李国栋
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Northwest Research Institute of Mining and Metallurgy
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Northwest Research Institute of Mining and Metallurgy
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/001Flotation agents
    • B03D1/018Mixtures of inorganic and organic compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D3/00Differential sedimentation
    • B03D3/06Flocculation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00Specified effects produced by the flotation agents
    • B03D2201/002Coagulants and Flocculants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00Specified effects produced by the flotation agents
    • B03D2201/02Collectors

Abstract

The invention discloses a beneficiation method for recovering micro-fine particle iron oxide from copper dressing tailings, and belongs to the technical field of mineral processing. The method comprises the steps of firstly carrying out superfine grinding, adding a dispersant sodium humate for size mixing after grinding to highly disperse the slime, and removing the fine slime by adopting pre-desliming. Adding flocculant cationic starch and maltodextrin to flocculate the ferric oxide and reverse flotating to obtain siliceous gangue, so as to obtain qualified iron ore concentrate product. The method has the advantages of safety, environmental protection, simple process, lower cost and strong adaptability, and realizes the secondary recycling of resources.

Description

A kind of beneficiation method that microfine iron oxide is reclaimed from nominal group process
Technical field
The invention belongs to mineral recovery technology field, specifically one kind reclaims microfine iron oxide from nominal group process Beneficiation method.
Background technology
With the increasingly depleted of mineral resources, valuable metal is reclaimed from mine tailing as the important topic studied now.I State produces every year contains considerable iron in substantial amounts of nominal group process, copper tailing, as this part iron has higher economy Value, but because its granularity is thinner, clay content is larger, reclaims more difficult.The method master for reclaiming iron from nominal group process at present Have:Direct flotation method, magnetic method, gravity separation method and its process integration etc..The problem of these methods are present is that the rate of recovery is relatively low, work Skill flow is complicated, production cost is higher etc..
The content of the invention
It is an object of the invention to provide a kind of beneficiation method that microfine iron oxide is reclaimed from nominal group process, solve existing The limitation of technology, reclaims the iron component in copper tailing.
To achieve these goals, a kind of beneficiation method that microfine iron oxide is reclaimed from nominal group process of the invention, It is specific as follows:
Step 1:Ore grinding:Ultra-fine grinding is carried out using raymond mill, ore milling concentration 65~75%, mog is less than 0.018mm Content is 85%~95%.
Step 2:Desliming:The ore deposit of milled is put into sloughing-off tank, concentration is to add flocculant in 50~70g/L, sloughing-off tank, is Cationic starch and maltodextrin, in mass ratio 3:1~5:1, consumption is 8~10kg/t, is taken off after ore pulp reaches high degree of dispersion Except sludge.
Step 3:Flocfloatation:Ore pulp after desliming is sized mixing, concentration is that mass percentage concentration is 30~35%, plus Enter activator white lime, consumption is 50~300g/t, and pH value adds collecting agent alkyl propyl group ether amines 10~11(Molecular formula: RO-CH2CH2CH2NH2, R is C8-C18 alkyl), consumption is 300~600g/t, carries out roughing, scans, and obtains qualified iron essence Ore deposit.
Flocculant is quaternary ammonium starch ethers and maltodextrin in mass ratio 4:1 addition or flocculant select tertiary amino alkyl ether Quality 3 is pressed with maltodextrin:1 addition or flocculant press 4 from quaternary ammonium starch ethers and maltodextrin:1 mass is added.
The beneficial effects of the present invention are:The present invention, which adds flocculant, to be made to remove after sludge high degree of dispersion, due to cation Starch has OH bases in itself with maltodextrin, by Hydrogen Binding Adsorption on ferric oxide solid particle, and cationic starch is pasted with malt Essence is without enough hydrophobic groups, and the floc sedimentation of generation is hydrophilic.It is counter after present invention addition gangue activator, collecting agent to be floated Choosing, so as to reach the effect for separating gangue and target minreal very well, realizes the recycling of secondary resource.Using the present invention Process processing nominal group process in Iron grade 33.67-38.75% microfine iron oxide, reach iron concentrate grade after recovery To more than 64%, the rate of recovery reaches 85% or so, and this method has simple technique, safety and environmental protection, manufacturing cost low, and feasibility is strong etc. Feature.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Embodiment
Embodiment 1
In the nominal group process of Gansu, Iron grade is 38.75%, mainly based on hematite-limonite, is carried out using raymond mill ultra-fine Ore grinding, ore milling concentration 65%, it is 85% that mog, which is less than 0.018mm contents,.Ore pulp adds tank diameter, and pulp density is 55g/L, Flocculant quaternary ammonium starch ethers and maltodextrin are added, by 4:1 mass ratio adds 8 kg/t, is taken off after ore pulp reaches high degree of dispersion Except sludge.Ore pulp after desliming is sized mixing, concentration is that mass percentage concentration is 30%, add activator white lime, consumption is 80g/t, pH value adds collecting agent alkyl propyl group ether amines, consumption is 350g/t 10.5, carries out roughing, scans, obtains iron ore concentrate Grade is 67.12%, and the rate of recovery is 83.45%.
Embodiment 2
In the nominal group process of Yunnan, Iron grade is 37.66%, mainly based on bloodstone, and Ultrafine Grinding is carried out using raymond mill Ore deposit, ore milling concentration 67%, it is 88% that mog, which is less than 0.018mm contents,.Ore pulp adds tank diameter, and pulp density is 60g/L, plus Enter flocculant tertiary amino alkyl ether and maltodextrin, by 3:1 mass ratio adds 8.5 kg/t, after ore pulp reaches high degree of dispersion Remove sludge.Ore pulp after desliming is sized mixing, concentration is that mass percentage concentration is 35%, add activator white lime, consumption For 100g/t, pH value adds collecting agent alkyl propyl group ether amines, consumption is 300g/t 10, carries out roughing, scans, and obtains iron essence Ore deposit grade is 65.34%, and the rate of recovery is 85.36%.
Embodiment 3
In the nominal group process of Jiangxi, Iron grade is 33.67%, mainly based on bloodstone, also containing a small amount of magnetic iron ore, uses thunder Cover flour mill and carry out Ultra-fine grinding, ore milling concentration 70%, it is 90% that mog, which is less than 0.018mm contents,.Ore pulp adds tank diameter, Pulp density is 50g/L, flocculant quaternary ammonium starch ethers and maltodextrin is added, by 4:1 mass ratio addition, 9.5 kg/t are per ton, Sludge is removed after high degree of dispersion when ore pulp reaches.Ore pulp after desliming is sized mixing, concentration is that mass percentage concentration is 35%, Activator white lime is added, consumption is that 150g/t is per ton, and pH value adds collecting agent alkyl propyl group ether amines, consumption is 450g/ 11 T, carries out roughing, scans, it is 64.34% to obtain iron concentrate grade, and the rate of recovery is 86.78%.

Claims (5)

1. a kind of beneficiation method that microfine iron oxide is reclaimed from nominal group process, it is characterised in that:Comprise the following steps:
Step 1:Ore grinding:Ultra-fine grinding is carried out using raymond mill, ore milling concentration 65~75%, mog is less than 0.018mm Content be 85%~95%;
Step 2:Desliming:The ore deposit of milled is put into sloughing-off tank, is formed in the ore pulp that concentration is 50~70g/L, sloughing-off tank and adds wadding Solidifying agent, flocculant is cationic starch and maltodextrin, and both in mass ratio 3:1~5:1, consumption is 8~10kg/t, works as ore pulp Reach and sludge is removed after high degree of dispersion;
Step 3:Flocfloatation:Ore pulp after desliming is sized mixing, it is 30~35% to be adjusted to mass percentage concentration, is then added Activator white lime, consumption is 50~300g/t, and pH value adds collecting agent alkyl propyl group ether amines 10~11, consumption is 300~ 600g/t, carries out roughing, scans, obtain qualified iron ore concentrate.
2. a kind of beneficiation method that microfine iron oxide is reclaimed from nominal group process as claimed in claim 1, it is characterised in that: The molecular formula of collecting agent alkyl propyl group ether amines is:RO-CH2CH2CH2NH2, R is C8-C18 alkyl.
3. a kind of beneficiation method that microfine iron oxide is reclaimed from nominal group process as claimed in claim 1 or 2, its feature exists In:Flocculant is that quaternary ammonium starch ethers and maltodextrin press 4:It is per ton that 1 mass ratio adds 8 kg/t.
4. a kind of beneficiation method that microfine iron oxide is reclaimed from nominal group process as claimed in claim 1 or 2, its feature exists In:Flocculant is that tertiary amino alkyl ether and maltodextrin press 3:It is per ton that 1 mass ratio adds 8.5 kg/t.
5. a kind of beneficiation method that microfine iron oxide is reclaimed from nominal group process as claimed in claim 1 or 2, its feature exists In:Add flocculant quaternary ammonium starch ethers and maltodextrin presses 4:It is per ton that 1 mass ratio adds 9.5 kg/t.
CN201710369525.6A 2017-05-23 2017-05-23 Beneficiation method for recovering micro-fine particle iron oxide from copper dressing tailings Active CN107115975B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109290072A (en) * 2018-09-27 2019-02-01 山东理工大学 A kind of spodumene mine selective flocculation-Desliming method
CN117358425A (en) * 2023-12-05 2024-01-09 中铝科学技术研究院有限公司 Micro-fine grain galena and gangue mineral flocculation flotation method

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CN102274799A (en) * 2011-09-02 2011-12-14 中南大学 Composite medicine for effective magnetic separation and recovery pyrite concentrate from flotation tailings
CN104028367A (en) * 2013-03-05 2014-09-10 中国科学院广州地球化学研究所 Process for recycling sulfur and iron resources in copper and sulfur tailings
CN104941787A (en) * 2015-05-16 2015-09-30 江西理工大学 Technology for recycling copper, iron and garnets from tailings of copper beneficiation
CN105127003A (en) * 2015-08-07 2015-12-09 山东华晟投资有限公司 Method for recycling single quartz and feldspar from gold flotation tailings
CN105435957A (en) * 2016-01-12 2016-03-30 云南华联锌铟股份有限公司 Mineral separation technology for recovering low-grade marmatite and cassiterite minerals from copper separation tailings
CN106000620A (en) * 2016-05-10 2016-10-12 中钢集团马鞍山矿山研究院有限公司 Beneficiation method for recovering high iron and high sulfur concentrate from copper tailings containing sulfur and iron
CN106475219A (en) * 2016-10-11 2017-03-08 山西道尔铝业有限公司 A kind of method for removing iron of alumyte flotation tailings

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Publication number Priority date Publication date Assignee Title
CN1343626A (en) * 2000-09-19 2002-04-10 张美焦 Industrial process for preparing high-purity super-fine magnetite powder
CN1651148A (en) * 2005-02-04 2005-08-10 吉林吉恩镍业股份有限公司 Nickel sulfide, copper tailings comprehensive recovery technology
CN102179310A (en) * 2010-12-23 2011-09-14 紫金矿业集团股份有限公司 Floating process for comprehensively recycling copper separation tailings
CN102274799A (en) * 2011-09-02 2011-12-14 中南大学 Composite medicine for effective magnetic separation and recovery pyrite concentrate from flotation tailings
CN104028367A (en) * 2013-03-05 2014-09-10 中国科学院广州地球化学研究所 Process for recycling sulfur and iron resources in copper and sulfur tailings
CN104941787A (en) * 2015-05-16 2015-09-30 江西理工大学 Technology for recycling copper, iron and garnets from tailings of copper beneficiation
CN105127003A (en) * 2015-08-07 2015-12-09 山东华晟投资有限公司 Method for recycling single quartz and feldspar from gold flotation tailings
CN105435957A (en) * 2016-01-12 2016-03-30 云南华联锌铟股份有限公司 Mineral separation technology for recovering low-grade marmatite and cassiterite minerals from copper separation tailings
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109290072A (en) * 2018-09-27 2019-02-01 山东理工大学 A kind of spodumene mine selective flocculation-Desliming method
CN117358425A (en) * 2023-12-05 2024-01-09 中铝科学技术研究院有限公司 Micro-fine grain galena and gangue mineral flocculation flotation method
CN117358425B (en) * 2023-12-05 2024-04-12 中铝科学技术研究院有限公司 Micro-fine grain galena and gangue mineral flocculation flotation method

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